1st time builders! Construction calculators online, wanted to share

[nposluszny]

This might be useful for first time coop builders...like me, who wants a really nice roof on mine

http://www.blocklayer.com/roof/gambreleng.aspx
http://www.blocklayer.com/roof/
http://www.mycarpentry.com/roof-pitch-calculator.html
http://www.wendrickstruss.com/calculator/index.asp

I know of more, but I have used these for other projects, found them to be pretty helpful.